I went on amiunique.com, and it says that I’m unique.
Lowest scores: list of fonts JS (0.01%), canvas (0.00%), media devices (0.00%), and audio data (0.80%)
I use Linux Mint Debian edition, Librewolf browser, and Mullvad VPN. How do I become less unique?
Essentially using Linux with Librewolf and various browser addons is making you unique, since there are not many similar fingerprints.
It does as well as setting your locale to en-us, timezone to utc and giving random output from canvas every time.
Edit: You can also enable a fixed size for you window. More precisely the area which is visible to content (and also to javascript). https://librewolf.net/docs/faq/#what-are-the-most-common-downsides-of-rfp-resist-fingerprinting